OBERHOLSER] THE AVIAN GENUS BLEDA 155 
Description.—Tail about nine-tenths of wing; throat feathers not 
lengthened ; tarsus rather lightly scutellate; wing about 414 times 
the tarsus ; tarsus about 114 times exposed culmen; head not crested; 
nuchal hairs short (less than 20 mm.), branched; rictal bristles 
weak, reaching only about one-third the length of the bill, not ex- 
tending beyond the anterior edge of nostrils; bill rather strong, 
moderately lengthened, somewhat compressed, higher than broad 
at anterior edge of nostrils, but broader than high at base, its height 
at base more than one-third of exposed culmen; culmen curved 
almost from base; gonys only slightly ascending; maxillar tomium 
with but one subterminal notch ; nostrils rounded oval, a very little or 
not at all operculate, posteriorly; frontal feathering not extending 
beyond posterior margin of nostrils; bristles of nostrils few and 
short. 
Type.—Phyllastrephus leucopleurus Cassin. 
This genus is so different from Bleda (syndactyla) that it seems 
rather remarkably to have escaped separation until now. Of its 
other allies possessing roundish nostrils it needs further comparison 
with only Idiocichla, from which, however, it is easily distinguished. 
Apparently the only species belonging here 1s: 
Thescelocichla leucopleura (Cassin). 
ATIMASTILLAS’ gen. nov. 
Chars. gen.—Resembling Bleda, but nostrils lengthened; rictal 
bristles weak; height of bill at base much more than one-third of 
exposed culmen; culmen curved from base; gonys but slightly 
ascending, the angle not conspicuous; tarsus much longer than cul- 
men; bristles of nostrils few and short. 
Description —Tail about equal to wing or slightly less; throat 
feathers not lengthened; tarsus scutellate; wing about 41% times 
the tarsus; tarsus about 13g times the exposed culmen; head not 
crested ; nuchal hairs short, branched; rictal bristles weak, reaching 
not more than one-third the length of bill, and not beyond anterior 
edge of nostrils; bill stout, rather short, somewhat compressed, 
higher than broad at anterior edge of nostrils, about equal in height 
and breadth at base, its height at base nearly one-half the exposed 
culmen ; culmen much curved from base; gonys only a little ascend- 
ing; maxilla with but one subterminal notch; nostrils lengthened 
oval, operculate ; frontal feathering not extending beyond posterior 
edge of nostrils; nasal bristles very few and short. 
*ariuaotoc, neglectus; ‘AAdc, turdus. 
